Charger unit for battery powered diagnostic instruments



FIG. 1 is a front elevation of a charger unit for battery powered diagnostic instruments embodying my new design;

FIG. 2 is a rear elevation thereof;

FIG. 3 is a right side elevation thereof; the left side elevation being a mirror image of the right side elevation;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof.

The broken lines are shown for illustrative purposes only. 

The ornamental design for a charger unit for battery powered diagnostic instruments, as shown and described. 